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A020626 Smallest nonempty set S containing prime divisors of 9k+4 for each k in S. 1
5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 79, 83, 103, 107, 109, 127, 137, 157, 163, 173, 191, 197, 211, 223, 229, 233, 283, 337, 367, 373, 409, 421, 479, 607, 643, 691, 751, 863, 887, 941, 967, 1019, 1109, 1181, 1237, 1307, 1471 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..95 (full sequence)

CROSSREFS

Sequence in context: A240710 A115232 A332346 * A136207 A020624 A020621

Adjacent sequences:  A020623 A020624 A020625 * A020627 A020628 A020629

KEYWORD

nonn,fini,full

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 18 12:48 EST 2020. Contains 332018 sequences. (Running on oeis4.)